Sure, we can have a revolution.
I would just hope that it will be a bloodless one.
The main concept of the "revolution" has probably lost its meaning in the western world, or at least changed somewhat. Nowadays, when we think of "revolution", we think people going out into the streets and firing off whatever they have against an "oppressive" regime, and that stuff only seems to happen in the third-world countries. In more westernized societies, we have more quiet revolutions now, with people wanting a change in government/representation and whatnot.
I don't think we're in desperate need of another revolution/civil war any time soon. Maybe some reform, and hopefully one without any bloodshed, but I'd like to think we've evolved past the use of violence as a way to get something we want (oh the irony...). Changes in the system is far more likely than an all out revolution/civil war.